---
title: "A space probe far from the Earth is travelling at \\( 14.8 \\) \\( \\text{km s}^{-1} \\). It has mass \\( 1\\,312 \\) \\( \\text{kg} \\). The probe fires its rockets to give a constant thrust of \\( 156 \\) \\( \\text{kN} \\) for \\( 220. \\) \\( \\text{s} \\). It accelerates in the same direction as its initial velocity. In this time it burns \\( 150. \\) \\( \\text{kg} \\) of fuel.Calculate the final speed of the space probe in \\( \\text{km s}^{-1} \\)."
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url: "https://nerd-notes.com/ubq/91371/"
date_modified: "2025-11-04T18:51:42+00:00"
---

# A space probe far from the Earth is travelling at \( 14.8 \) \( \text{km s}^{-1} \). It has mass \( 1\,312 \) \( \text{kg} \). The probe fires its rockets to give a constant thrust of \( 156 \) \( \text{kN} \) for \( 220. \) \( \text{s} \). It accelerates in the same direction as its initial velocity. In this time it burns \( 150. \) \( \text{kg} \) of fuel.Calculate the final speed of the space probe in \( \text{km s}^{-1} \).

A space probe far from the Earth is travelling at \( 14.8 \) \( \text{km s}^{-1} \). It has mass \( 1\,312 \) \( \text{kg} \). The probe fires its rockets to give a constant thrust of \( 156 \) \( \text{kN} \) for \( 220. \) \( \text{s} \). It accelerates in the same direction as its initial velocity. In this time it burns \( 150. \) \( \text{kg} \) of fuel.

Calculate the final speed of the space probe in \( \text{km s}^{-1} \).

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/91371/*